PlzNavigate: Move navigation-level mixed content checks to the browser.

chrome/chrome_browser.gypi

 # Copyright 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 1644 matching lines @@
       'browser/content_settings/chrome_content_settings_client.cc',
       'browser/content_settings/chrome_content_settings_client.h',
       'browser/content_settings/chrome_content_settings_utils.cc',
       'browser/content_settings/chrome_content_settings_utils.h',
       'browser/content_settings/cookie_settings_factory.cc',
       'browser/content_settings/cookie_settings_factory.h',
       'browser/content_settings/host_content_settings_map_factory.cc',
       'browser/content_settings/host_content_settings_map_factory.h',
       'browser/content_settings/local_shared_objects_container.cc',
       'browser/content_settings/local_shared_objects_container.h',
+      'browser/content_settings/mixed_content_settings.cc',
+      'browser/content_settings/mixed_content_settings.h',
       'browser/content_settings/tab_specific_content_settings.cc',
       'browser/content_settings/tab_specific_content_settings.h',
       'browser/content_settings/web_site_settings_uma_util.cc',
       'browser/content_settings/web_site_settings_uma_util.h',
     ],
     'chrome_browser_data_usage_sources': [
       'browser/data_usage/tab_id_annotator.cc',
       'browser/data_usage/tab_id_annotator.h',
       'browser/data_usage/tab_id_provider.cc',
       'browser/data_usage/tab_id_provider.h',
@@ skipping 2652 matching lines @@
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
             'common',
           ],
         },
       ],
     }],
   ],
 }